GM Service Manual Online
For 1990-2009 cars only

Front Wheel Hub, Bearing, and Seal Replacement RWD

Removal Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the tire and wheel. Refer to Tire and Wheel Removal and Installation .
  3. Remove the rotor. Refer to Front Brake Rotor Replacement .
  4. Remove the wheel speed sensor and brake hose mounting bracket bolt from the steering knuckle.

  5. Object Number: 379486  Size: SH
  6. Remove the wheel hub and bearing (4) 15-series mounting bolts.

  7. Object Number: 379487  Size: SH
  8. Remove the wheel hub and bearing mounting bolts (4) , the 25/35 series.
  9. Remove the wheel hub and bearing and splash shield from the vehicle.
  10. Remove the O-ring seal from the steering knuckle bore, the 25/35 series.
  11. Remove the wheel speed sensor mounting bolt (5).
  12. Clean and inspect the O-ring seal, the 25/35 series.
  13. Replace the seal if the following conditions exist:
  14. • Nicks
    • Cuts
    • Dry or brittle
    • Compression set

Installation Procedure

  1. Clean all corrosion or contaminates from the steering knuckle bore and the hub and bearing.
  2. Lubricate the steering knuckle bore with wheel bearing grease or the equivalent.

  3. Object Number: 379487  Size: SH
  4. Install the O-ring (7) to the steering knuckle, 25/35 series.
  5. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  6. Install the wheel speed sensor mounting bolt.
  7. Tighten
    Tighten the bolt to 18 N·m (13 lb ft).

  8. Install the wheel hub and bearing and splash shield to the vehicle, 25/35 series.

  9. Object Number: 379486  Size: SH
  10. Install the wheel hub and bearing (4) and splash shield to the 15-series steering knuckle.
  11. Install the wheel hub and the 15-series bearing mounting bolts.
  12. Install the wheel hub and bearing mounting bolts, the 25/35 series.

    Tighten
    Tighten the bolts to 180 N·m (133 lb ft).

  13. Install the wheel speed sensor and brake hose mounting bracket bolt to the steering knuckle.
  14. Tighten
    Tighten the brake hose clip bolt to 12 N·m (106 lb in).

  15. Install the rotor. Refer to Front Brake Rotor Replacement .
  16. Install the tire and wheel. Refer to Tire and Wheel Removal and Installation .
  17. Lower the vehicle.

Front Wheel Hub, Bearing, and Seal Replacement 4WD

Tools Required

J 45859 Axle Remover

Removal Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Remove the tire and wheel. Refer to Tire and Wheel Removal and Installation.
  3. Remove the rotor. Refer to Front Brake Rotor Replacement.
  4. Remove the wheel speed sensor and brake hose mounting bracket bolt from the steering knuckle. Refer to Front Wheel Speed Sensor Replacement.

  5. Object Number: 673322  Size: SH
  6. Remove the wheel drive shaft nut retaining cover.

  7. Object Number: 320653  Size: SH

    Important: Do not reuse the nut. A new nut must be used when installing the wheel drive shaft.

  8. Remove the wheel driveshaft assembly retaining nut (2) and washer (3) from the wheel driveshaft.

  9. Object Number: 870456  Size: SH
  10. Disengage the wheel drive shaft from the wheel hub and bearing using J 45859 or equivalent.

  11. Object Number: 379486  Size: SH
  12. Remove the wheel hub (4) and the 15-series bearing mounting bolts (9).

  13. Object Number: 379487  Size: SH

    Notice: Wheel drive shaft boots, seals and clamps should be protected from sharp objects any time service is performed on or near the wheel drive shaft(s). Damage to the boot(s), the seal(s) or the clamp(s) may cause lubricant to leak from the joint and lead to increased noise and possible failure of the wheel drive shaft.

  14. Wrap shop towels around the inner and outer wheel drive shaft boots.
  15. Remove the wheel hub and bearing (4) mounting bolts, 25/35 series.
  16. Remove the wheel hub and bearing and splash shield from the vehicle.
  17. Remove the O-ring seal from the steering knuckle bore, 25/35 series.
  18. Remove the wheel speed sensor mounting bolt (5).
  19. Clean and inspect the O-ring seal, 25/35 series.
  20. Replace the seal if the following conditions exist:
  21. • Nicks
    • Cuts
    • Dry or brittle
    • Compression set

Installation Procedure

  1. Clean all corrosion or contaminates from the steering knuckle bore and the hub and bearing assembly.
  2. Lubricate the steering knuckle bore with wheel bearing grease or the equivalent.

  3. Object Number: 379487  Size: SH
  4. Install the O-ring (7) to the steering knuckle, the 25/35 series.
  5. Notice: Refer to Fastener Notice in the Preface section.

  6. Install the wheel speed sensor mounting bolt to the wheel hub and bearing.
  7. Tighten
    Tighten the sensor mounting bolt to 18 N·m (13 lb ft).

  8. Install the wheel hub and bearing and splash shield to the vehicle, 25/35 series.

  9. Object Number: 379486  Size: SH
  10. Install the wheel hub and bearing (5) and splash shield (6) to the vehicle, 15 series.
  11. Install the wheel hub and bearing mounting bolts (8), the 15 series.
  12. Install the wheel hub and bearing mounting bolts (8), 25/35 series.
  13. Tighten
    Tighten the wheel hub to knuckle bolts to 180 N·m (133 lb ft).


    Object Number: 320653  Size: SH
  14. Install the nut (2) and washer (3) retaining the wheel drive shaft assembly to the wheel hub and bearing.
  15. Tighten
    Tighten the nut to 240 N·m (177 lb ft).

  16. Install the wheel speed sensor and brake hose mounting bracket bolt to the steering knuckle. Refer to Front Wheel Speed Sensor Replacement.
  17. Install the rotor. Refer to Front Brake Rotor Replacement.
  18. Install the tire and wheel. Refer to Tire and Wheel Removal and Installation.
  19. Lower the vehicle .